Scale.



F. P. DUNN.

SCALE.

APPLICATION FILED JUNE 21, 1909. 1,064,458. Patented June 10,1913.

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avwemfoz Frank P.Dunn

UNITED STATES PATENT ()FFICE.

FRANK P. DUNN, OF ANDERSON, INDIANA, ASSIGNOR TO THE ANDERSON TOOL COM- PANY, 0F ANDERSON, INDIANA, A CORPORATION OF INDIANA.

SCALE.

Specification of Letters Patent.

Patented June 10, 1913.

Application filed June 21, 1909. Serial No. 503,338.

To all whom it may concern:

Be it known that I, FRANK P. DUNN, a citizen of the United States, residing at Anderson, in the county of Madison and State of Indiana, have invented certain new and useful Improvements in Scales, of which the following is a specification.

One object of my invention is to produce a two-platform weighing scale for use upon a counter in such manner as to be readily accessible from either side of the counter.

A further object is to so construct the scale that a proper indication may be given so as to be visible from both sides of the counter.

I further provide such improvements in details of construction as shall be hereinafter pointed out.

The accompanying drawings illustrate my invention.

Figure 1 is a vertical section of a scale embodying my invention, the section being on line 1 1 of Fig. 2; Fig. 2 a section on line 2 2 of Fig. 1; and Fig. 3 a section, on an enlarged scale, on line 3 3 of Fig. 2.

In the drawings 10 indicates a suitable base and inclosing casing within which are mounted two beams 11 and 12. In the present form the beams are levers of the second class with knife edge fulcrums 11 and 12 respectively at their ends. At intermediate points the beams 11 and 12 are provided with knife edges 11 and 12 respectively upon which is supported a platform bar or frame 13 which extends to and rests upon both knife edges 11" and 12". The bar or frame 13 is provided with two platforms 14 and 15 which are arranged upon opposite sides of the upright portion 10' of the casing 10, said platforms being conveniently rigidly connected to the bar or frame 13. In order to prevent any possible clamping of the platform bar upon the knife edges 11 and 12 I deem it advisable, although not absolutely necessary, to provide the frame 13 at one end with a leg 13 which rests upon the knife edge 12 and has a pivotal connection 13" with the main portion of the frame 13.

Pivotally mounted upon a pin 21, in an intermediate portion of the casing 10, are two sleeves 22 and 23. Depending from sleeve 22 is an arm 24 carrying a weight 25 and depending from sleeve 23 is an arm 26 carrying a weight 27, the weights 25 and 27 being alike. Secured to sleeve 22 is an arm 28 and secured to sleeve 23 is a similar arm 29. In the form shown arms 24 and 26 extend downwardly and are spread in opposite directions from the vertical while arms 28 and 29 extend upwardly and are spread inopposite directions from the vertical, lying upon opposite sides of the vertical from their corresponding arms 24 and 26 respectively. Beam 12 is provided at its inner end with a cross bar 31 and secured to this cross bar are two upwardly extending links 32 and 33, link 33 extending upwardly and being connected to arm 28 while link 32 is connected to arm 29. Similarly the inner end of beam 11 is provided with a cross bar 34 to which are secured two links 35 and 36, link 36 being connected to arm 28 and link 35 being connected to arm 29, the arrangement being such that a simultaneous downward movement of the inner adjacent ends of beams 11 and 12 will produce upward opposite movement of the two weights 25 and 27.

Secured to sleeve 22 is an indicator finger 41 adapted to traverse the scale 42 formed on one face of a partition 43 arranged within the casing structure 10 between the two glasses 44 and 45. Similarly sleeve 23 is provided with an indicator finger 46 which traverses a scale formed on the opposite face of partition 43.

In operation any load applied to either one of the platforms 14 or 15 will simultaneously and equally affect both scale beams 11 and 12 and cause a simultaneous upward or opposite swing of the two weights 25 and 27, the scale beams coming to a position of equilibrium whenever the effect of the weights 25 and 27 upon the scale beams has increased to a sufficient amount to balance the applied load, in a well known manner. It will be readily apparent from an inspection of the drawings that the two platforms 14 and 15 are substantially a single structure though lying on opposite sides of the casing 10' and that therefore any load will have the same effect upon the indicators irrespective of the platform to which it may be applied.

What I claim as my invention and desire to secure by Letters Patent is:

l. A weighing scale including charts with two sets of reverscly arranged oppositely facing scale graduations, an indicator adapted to traverse each set'of scale graduations, means for fulcruming said indicator-scoaxially, oppositely extending arms rigidly connected with the indicators near their fulcrums, parallel connecting rods extending pivotaliy from said arms, a platform structure for receiving the load, a counterpoise and means for transmitting the efiectof the load on said platform structure to said connecting rods.

2. In a weighing scale, the combination of a twofaced indicator, a pair of indicator fingers cooperating with said indicator, a suitable supporting structure, a pair of receiving platforms arranged upon opposite sides of said structure and connected for simultaneous movement in the same direction, a scale beam structure supporting said platforms, and means for counter-balancing said scale beam structure atdifferentpoints under different loads.

3. In a weighing scale, the combination of a pair of scale beams, a pair of indicator members movable in opposite directions, indicating mechanism cooperating with said indicator members to gage the positions thereof, intermediate connections between said scale beams for producing opposite simultaneous mow'ement thereof, counterbal-' ancing mechanism applied to said scale beams for equilibrating the same at different points under different loads, and a receiving platform structure applied to the scale beams and extending to opposite sides of the indicating structure.

4. In a weighing scale, the combination of a suitable base having an intermediate upwardly extending casing, a pair of scale beams mounted within the base, 'a pair of load receiving platforms supported upon said scale beams and arranged one upon each side of said casing, indicating means in the upper partof said casing, and a connection from each of said scale beams to the indicating means.

5. In a weighing scale, the combination with a pair of scale beams, of a platform structure comprising a main portion one end of which is mounted upon one of said beams, another portion pivoted at one end of said main portion and mounted upon the other beam, and a separate platform carried near each end of said platform structure, substantially as and for the purpose set forth.

6. In a weighing scale, the combination with a suitable base having an intermediate upwardly extending casing, of a pair of scale beams mounted within the base, a pair of receiving platforms supported upon said scale beams and arranged one upon each side of the upwardly extending casing, a pair of oppositely moving counterbalanc ing weights each connected to each scale beam, a pair of indicator fingers connected with said counterweight, anda two-faced indicator arranged to be traversed by said two indicatorfingers.

7. In a weighing scale, the combination with a suitable base having an intermediate upwardly extending casing, of a pair of scale beams mounted within the base, a pair of rigidly connected receiving platforms supported upon said scale beams and ar- 7 ranged one upon each side of the upwardly extending casing, a'pair of oppositely-moving counterbalancing weights each connected to each scale beam, a pair of indicator fingers connected with said counterweights, and a two-faced indicator arranged to be traversed by said two indicator'fingers.

In witnesswhereof, I, have hereunto setmy hand and sea'l at Indianapolis, Indiana, this "seventeenth day of June, A. D. one thousand nine hundred and nine.

FRANK P. DUNN. [1... 8.

\Vitnesses 2 CHESTER BRADFORD,

THOMAS W. MCMEANS.

Copies 0! this patent may be obtained for five cents each, by addressing the Commissioner of Patents.

Washington, D. G. 

